Hey Overclock crew! I'm currently having problems with my 3fire set up of Gigabyte 7950s. I have a Gigabyte UD3R-bladidididiblah motherboard and I can't seem to get the cards to not hit each other or keep the heat down. I'm a noob with xfire, so if anyone could help out that'd be great. (: I have a Corsair C70 case if that helps.

Hmm. Seems like a design flaw if the fans are able to hit another card right next to it. Normally the plastic shroud will hit a card under it BEFORE the fans do. You could always put a tiny rubber stopper in between the cards. Also add some high pressure fans on your side window.. will help a ton.

Why not just get a thin strip of silicone and use that to space out the cards?

Or, when you screw down the bracket, can you not just move the top and lower card away from the central one then nip up the screws? Generally there should be about 0.5mm play between the threads of the screw and its clearance holes

If they don't go together ten you could shout at either the card, motherboard or case manufacturer as the component spacing is defined by the ATX standard precisely so this shouldn't happen. Unless of course there is some caveat in the spec of either you overlooked, then they've got you!